Siemens 7SK80 - Flexible Protection Functions

Technical Data
4.19 Flexible Protection Functions
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
398
4.19 Flexible Protection Functions
Measured Values / Modes of Operation
Setting Ranges / Increments
Fixed Dropout Difference
Three-phase I, 3I
0
, I1, I2, I2/I1, V, 3V
0
, V1, V2, dV/dt, P for-
ward, P reverse, Q forward, Q reverse, cosϕ
Single-phase I, I
N
, I
Ns
,I
N2
, V, V
N
,V
x
, P forward, P reverse, Q
forward, Q reverse, cosϕ
Without fixed phase reference f, df/dt, binary input
Measurement method for I, V Fundamental,
r.m.s. value (true RMS),
positive sequence system,
negative sequence system,
zero sequence system
Pickup on exceeding threshold value or
falling below threshold value
Pickup thresholds:
Current I, I
1
, I
2
, 3I
0
, I
N
for I
N
= 1 A 0.05 A to 40.00 A Increments 0.01 A
for I
N
= 5 A 0.25 A to 200.00 A
Relationship I
2
/I
1
15 % to 100 % Increments 1%
Sensitive ground current I
Ns
0.001 A to 1.500 A Increments 0.001 A
Voltage V, V
1
, V
2
, 3V
0
2.0 V to 260.0 V Increments 0.1 V
Displacement voltage V
N
2.0 V to 200.0 V Increments 0.1 V
Power P, Q for I
N
= 1 A 2.0 W to 10000 W Increment 0.1 W
for I
N
= 5 A 10 W to 50000 W
Power factor cosϕ -0.99 to +0.99 Increments 0.01
Frequency for f
Nom
= 50 Hz
for f
Nom
= 60 Hz
40.0 Hz to 60.0 Hz
50.0 Hz to 70.0 Hz
Increments 0.01 Hz
Increments 0.01 Hz
Frequency change df/dt 0.10 Hz/s to 20.00 Hz/s Increments 0.01 Hz/s
Voltage change dV/dt 4 V/s to 100 V/s Increments 1 V/s
Dropout ratio > element 1.01 to 3.00 Increments 0.01
Dropout ratio < element 0.70 to 0.99 Increments 0.01
Dropout difference f 0.02 Hz to 1.00 Hz Increments 0.01 Hz
Pickup delay (standard) 0.00 s to 60.00 s Increments 0.01 s
Pickup delay for I
2
/I
1
0.00 s to 28800.00 s Increments 0.01 s
Command delay time 0.00 s to 3600.00 s Increments 0.01 s
Dropout delay 0.00 s to 60.00 s Increments 0.01 s
Dropout difference df/dt 0.1 Hz/s
Dropout difference dV/dt 3 V/s